I understand you're asking for a detailed paper on "Portable Autodesk AutoCAD 2009." However, I must clarify some important points before proceeding.
| Software | License | Portable | Notes | |----------|---------|----------|-------| | (older free version) | Freeware (legacy) | Yes (via portable apps) | 2D CAD, DWG compatible | | nanoCAD (v5 free) | Freeware | Unofficial portable possible | Similar UI to AutoCAD | | LibreCAD | GPL | Yes – native portable | Open source, 2D only | | QCAD | GPL / Commercial | Yes | Lightweight, professional option | | BricsCAD Shape | Free | Can be run from USB | 3D conceptual design | Portable Autodesk AutoCAD 2009